What is the best way to transform an array of objects into MenuItems for a Material-UI Select component?

I am facing an issue with mapping the values of field choices to create options for an MUI Select field from an array called fieldChoices.

Here is how I populate the fieldChoices array:

fieldChoices = {
    choices: filtered_status.map(function (item) {
        return {
            id: item.IntakeID,
            title: item.Title,
        };
    }),
};

The populated fieldChoices array has a structure like this:

{choices: [{id: 123, title: "321"}, {id: 456, title: "654"}]}

This is my attempt at mapping the MenuItems:

<TextField value={ID || ""} select>
    {fieldChoices?.choices?.map((index, e) => {
        return (
            <MenuItem key={index} value={e}>
                {e}
            </MenuItem>
        );
    })}
</TextField>

Answer №1

In the map function, the first parameter represents the current element while the second parameter represents the index. It is recommended to use the id as the key instead of the index value.

{fieldChoices?.choices?.map((element, idx) => {
    return (
        <MenuItem key={element.id} value={element.id}>
            {element.id + element.title}
        </MenuItem>
    );
})}

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